Basler ace acA640-90gm - Mono 8 Format

Pixel Data Formats
Basler ace GigE 181
9.3.6 Mono 8 Format
When a color camera is set for the Mono 8 pixel data format, the values for each pixel are first
converted to the YUV color model. The camera then transmits the 8 bit Y value for each pixel to the
host PC. In the YUV color model, the Y component for each pixel represents a brightness value.
This brightness value can be considered as equivalent to the value that would be sent from a pixel
in a monochrome camera. In the color camera, however, the Y component is derived from
brightness values of the pixel and neighboring pixels. So in essence, when a color camera is set for
Mono 8, it outputs an 8 bit monochrome image. (This type of output is sometimes referred to as "Y
Mono 8".)
The table below describes how the pixel data for a received frame will be ordered in the image buffer
in your PC when a color camera is set for Mono 8 output.
The following standards are used in the table:
P
0
= the first pixel transmitted by the camera
P
n
= the last pixel transmitted by the camera
B
0
= the first byte in the buffer
B
m
= the last byte in the buffer
Byte Data
B
0
Y value for P
0
B
1
Y value for P
1
B
2
Y value for P
2
B
3
Y value for P
3
B
4
Y value for P
4
B
5
Y value for P
5
B
6
Y value for P
6
B
7
Y value for P
7
• •
• •
• •
B
m-3
Y value for P
n-3
B
m-2
Y value for P
n-2
B
m-1
Y value for P
n-1
B
m
Y value for P
n